Match the item of Column I with the item of the Column II
Column I Column II
a) $N H_{4} O H + C H_{3} C O O H ⟶ C H_{3} C O O N H_{4} + H_{2} O$ (i) Thermal decomposition
b) $2 A g B r ⟶ 2 A g + {B r}_{2}$ (ii) Thermit reaction
c) $Z n C O_{3} ⟶ Z n O + C O_{2}$ (iii) Photochemical reaction
d) $2 A l + {F e}_{2} O_{3} ⟶ 2 F e + {A l}_{2} O_{3}$ (iv) Neutralization reaction

(d) ii (c) iv (b) i (a) iii

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(b) ii (d) i (a) iii (c) iv

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(a) iv (b) iii (c) i (d) ii

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Solution

The correct option is D (a) iv (b) iii (c) i (d) ii
Reaction a) is neutralization reaction, acid reacts with base to form salt and water.
Reaction b) is photochemical reaction.
Reaction c) is the thermal decomposition of zinc carbonate to form zinc oxide and carbon dioxide.
Reaction d) is a highly exothermic reaction between aluminium and iron(III) oxide that produces molten iron. It is thermite reaction.

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Column I	Column II
a) $N H_{4} O H + C H_{3} C O O H ⟶ C H_{3} C O O N H_{4} + H_{2} O$	(i) Thermal decomposition
b) $2 A g B r ⟶ 2 A g + {B r}_{2}$	(ii) Thermit reaction
c) $Z n C O_{3} ⟶ Z n O + C O_{2}$	(iii) Photochemical reaction
d) $2 A l + {F e}_{2} O_{3} ⟶ 2 F e + {A l}_{2} O_{3}$	(iv) Neutralization reaction

Match the item of Column I with the item of the Column IIColumn IColumn IIa) NH4OH+CH3COOH⟶CH3COONH4+H2O(i) Thermal decompositionb) 2AgBr⟶2Ag+Br2(ii) Thermit reactionc) ZnCO3⟶ZnO+CO2(iii) Photochemical reactiond) 2Al+Fe2O3⟶2Fe+Al2O3(iv) Neutralization reaction